Not home security, but I'm of the opinion this should apply for businesses and public places in some case. For instance, I usually carry a gun on me. If I go into the court house or a concert venue I'm prohibited from doing that. IMO they have now assumed a level of liability to provide a reasonable level of effective security and they're negligent if they don't and I'm injured or kill because of a mass shooting anyway because they didn't enforce their own policies.

Speaking of guns, it's actually also not unheard of for people to be partly responsible for crimes committed with guns that were stolen from them, even in their home. You have something dangerous, like a network that has become a de facto platform for government officials, then yeah: you have a responsibility to take reasonable preventative measures too.